Lock for slider mechanism

Movable or removable closures – Mounted for optional movements – Pivot mounted on sliding member; e.g. – slide-stile

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Details

49176, E05D 1522

Patent

active

049302540

ABSTRACT:
The present invention relates to a locking device for use with the slider mechanisms of a window. In prior slider mechanism of the type described, a potential problem exits where the dimensions of the slider mechanisms changes. For example, in the case of a window, if the frame pieces bow outwardly due to warping, heat, stress, etc., as can happen where the frame is of plastic material, the window sash can fall out of the frame. In the present invention there is a carriage which rides in an elongated channel of the window and a bracket attached to the sash which slide relative to the frame. The channel has lips which overlie its edges. A coupling member, or connector, is provided having one end which is connected to the bracket and another end with a neck which is fitted to the carriage. The coupling member neck also has a pair of outwardly extending arms which fit into the channel. The arms extend transversely to the elongated direction of the channel. If there is a change in dimension of either of the window pieces, the arms of the coupling engage and lock against the channel lips and prevent the sash from being separated from the frame having the channel.

REFERENCES:
patent: 4364199 (1982-12-01), Johnson
patent: 4644691 (1987-02-01), Wright

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